Packing



l. E. MASTIN PACKING Nov. 6, 1923. y

Filepd May 27,

rr e.V err CHARLES I. E. MAsTIn, or MIDLAND PARK, Nnvr JERSEY.

PACKING?.

Application :filed May 27, 1920. Serial No. 384,750.' i

To a7! .ir/1.9m it muy concern f 3, the pad is bent longitudinally into chan- VBe it known that l. CHARLES I. E. Massin, .neled form, This will bring its lateral edges a citizen ot the United States, residing at or faces into such position that in the f Midland Fark, in the county otBergen and ultimate product if the packing is to be 5 State oil New Jersey, have invented certain usedinY contact with some moving-part, as new and usetul Improvements in Packings, a piston rod, the edges of the t'abrielayers ot which the following is a speciieation.- may tace and be in contact with' sueh'inov- 60 This invention relates-tov packing inateing part. rials, and particularly to packing materials ln Figure e is shown a spiral core Z coni- 10 formed elongated, as in strips and used for' posed of a Vsubstance which, with my prinpurposes where one ot the packedv parte cipal object in view, is adapted to resist moves relatively to the other, as a piston vwear to better advantage than the body oi? 65 rod in its gland,`and it is therefore necesthe packing. The chief component of thel sary or desirable to provide the packing' substance forming this core is inthe present with means vto resist wear or otherundesirinstance graphite. It will be an advantage, able results incident to such movement. My as will be indicated, if this spiral core is object is ,to provide an elongated packing so formed that its convolutions will pro- 70 which is well adapted for use, for example, duce an exterior spiral channel e.. The core f as a packing ot' the particular class Vabove is flexible, and inthe preferred form is indicated and which will have a high depractically without. elasticity' it is both a I u l a 7 Vgree of iiexibllity, so that it may be enwear-resistant and a lubricant.

tei-ed in packing relation to they parts to vbe -Having shaped the body to the channeled packed with the greatest possible facility. torni, as above explained7 and having pro- In the accompanying drawing, vided the core d, I Vplace the core in the Figure l is a perspective view of the iin-V groove or channel of the body and 'then 1nproved packing piece; Lreduce these thus-assembled parts into a Figure 2 is an elongated sectional view press, wherein they are subjected to pres- 80 thereof` the section being taken on the line sure andthe rubber of the body is vulcan- Q-2 in Figure l; ized, it being understood'that the rubber Figure 8 shows in perspective the blankV as it exists in the body previous to thisis trom which the body of the packing is in the uncured state. .The product'will have 'Y formed; the form showny in Figure l (instead of be- S5 Figure 4 is a side elevation, partly in loning square, it may have seine. other torni, gitudinal section, ot the core ot the packing; as rounded at the back. as shown in Figures Figure 5 is a perspective view of a mod- 8 and 9), and as the spiral Vin the present itied form ot' the packing.y and Figures (i instance is assumedV to be round in end eleand 7 similar views of parts thereof; vationV the edge portions c ot the body will 90 Figures 8 and 9 are perspective views oimore or less overlap itjand so hold it in place.

other modiiied forms of the packing; and @ne important result ot' subjecting the 40 Figure l0 shows how the packing may be channeled body oit yielding material and Hexer. and twisted. the core, formed in effect with exterior por- 'iY prefer to torni the body of the packing tions in relief or as projections due to the 95 oi a combination ot' some stout fabric and vcl anne-l e, to pressure in a pre-ss or mold is rubber, the fabric being inr layers o; and the that the portions in relief. marked f in rubber o cementing the various layers to- Figure 4, foi-1n recesses in said body, the

gether, as by being interposed between the parts then setting in the `final product in layers. The fabric layers are shown by, a state or" interlock with each other. 100 solid lines and the rubber by broken lines in lnstead of arranging thecore so as to'seat Figure 3. The layers of fabric will best directly against the body, may interpose be out on the bias, as indicated in said iiga eushion'between the core and body, lthat ure, is, back of the core. This cushion may be Having in this way 'formed an elongated formed in various ways.Y Thus, in Figures 105 pad or the like such as is shown in Figure 5 to 7 it is composed of a rubi??? ,Slilpi against which the coi'e directly bears and a strip z', formed say of fabric treated with rubber, to form a backing for the strip 7b; or as shown in Figure 8 there may be a suitable yielding strip y' to form a seat for the core and a filler back of the strip composed of layers of fabric It' and rubber arranged With its fabric layers set with their edges presented to the strip j; or as shown in Figure 9 there may be a suitable yielding -strip Z to foi-m a seat for the core, a filler ml like the ller shown in Figure 8 and arranged back of the strip Z, and back of the liller m a strip a of soft rubber. After the pad has been formed and channeled as described in reference to Figures l to 4. the parts constitutinfthe core and cushion are placed therein, whereupon the thus-assembled parts are placed in the press and subjected to pressure and vulcanizing, the edge portions of the pad, which then becomes a casing for the core and cushion, overlapping the core the same as in the form rst described and so holding the contained parts in place.

Even after the spiral core becomes Worn 'through` as an incident of the friction of a' piston or other moving part in Contact therewith, which is possible, the parts of the core left remaining as partial volutes will keep their original positions in the body of the packing due to the recess or bed each such volute forms therein for itself at the time of compressing and vulcanizing.

So far as I am aware it is `nen1 to provide, in a packing, a body structure of yielding material and, ein any Way embedded therein (whether as a core or not), a Wear-assuming means of less yielding material, or a lubricating means, including spiral or other Whorls, turns or convolutions formed each about an axis Which is substantially parallel with a Working face (as A, Figures l, 2, 5, 8 and 9) of the packing and having their exteriors presented to said faces.

Having thus fully described my inveni ,frias-ee tion, what l claim as new and desiie to sccure `by Letters Patent is l. A flexible packing member including a yielding body having a Working face and a flexible 4less yielding spiral core contained in the body and having its exterior presented to said face.

2. L Yflexible packing member including ayielding body having a working face and in lthe body and having its exterior presented to said face.

a Vflexible unyiclding spiral core containedr 3. flexible packing member including V Va yielding body having an exterior Working` face and a lflexible elongated core `contained in said body and having a surface portion, eitending longitudinally thereof and appreciably less in Width than the core is thick, exposed at said face, said body otherwise concealing the core.

li. A flexible packing member including a yielding body having an exterior Working face and a flexible elongated spiral core contained .in said body and having an exterior surface portion extending longitudinally thereof and appreciably less in Width than the core is thick, exposed at said face, said body otherwise concealing the core.

5. A packing member including a channeled yielding body and a core arranged longitudinally of and in the channel of the body Yand exposed longitudinally by said channel, said body at one side of the channel overlapping the core and thus holding the core in the channel.

G. A packing member including a channeled casing, longitudinally of and in the chan-nel of the casing and exposed by the channel, and a cushion of material more yielding than the core arranged in the channel back of the core.

ln testimony whereof l atlix my signature.

CHARLES I. E. MASTN. Y

an elongated core arranged 

